Wrench.



No. 857,163. PATENTED JUNE 18, 1907.

E. H. DERBY.

. WRENGH. APPLIGAIION FILED AUG. 11,1906.

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UNITED I STATES PATENT OFFICE.

EGBERT 1-1. DERBY, or WINNEBAGO, MINNESOTA.

-WRENCH.'

Specification of Letters Patent.

Application filed August 11,1906- Serial N- 330,251-

Patented. June 18, 1907.

wrenches, and has for its object to provide a wrench having V-shapedintegral, or alligator aws, mounted on a pivot, and a springactuateddog, for engaging ratchet teeth, on I said wrench, whereby the headcontaining the jaws, may be set at various angles, for

engaging nuts or pipes of difficult accessibility.

The invention consists in the novel construction and arrangement ofparts hereinafter described and illustrated in-the drawings, andparticularly pointed out in the appended claims.

Figure 1 is a side elevation of a Wrench constructed in accordancewith'this inven tion. Fig. 2 is a plan view. Fig. 3 is aview similar toFig. 2, showing a modification.

Referring to the drawing, 1 designates the handle of the wrench, towhich is secured plates 2 and 3, which are designed to hold aspring-actuated dog. The spring-actuated dog is mounted in a slot in thehandle and is beveled at its outer end whereby it is enabled to engagethe teeth 5 of the wrench-head 6, and hold it at the desired adjustment.The wrench head is pivotally mounted on a heavy rivet, 7 which piercesboth plates and the handle. The wrench head is preferably alligator orVshaped, and is provided with teeth or serrations on one of the jaws.The dog 8 which operates in a slot in the handle, between the twoplates, is held in engageverse slots 11 and 12.

ment with the ratchet teeth 5 by means of a spring 9. When it is desiredto release the wrench-head from the spring-actuated dog, a projectinglug 10 is pressed against the spring, and the dog then releases thepivoted wrench-head, which enables the same to be set at another angle.

In Fig. 3 of the drawing, a modification is shown, which shows theplate2 with trans- The slot 12 admits of a slight oscillation, of theplate 2 when it is desired to lock the dog in engagement with thewrench-head 6, as will be readily understood.

What I claim is,

1. A wrench having a slotted handle,

plates mounted on each sideof said handle, a V-shaped wrench headpivoted between one of said plates and the handle, a spring-actu ateddog mounted in said slot, and adapted to hold said Wrench head at thedesired adjustment, said plates being adapted to form a housing for saiddog, substantially as described.

2. Ina Wrench,the combination with a movable head pivoted to a handle, adog mounted in said. handle, and having a spring for holding the same inengagement with the head, plates mounted on each side of said handle,and adapted to guide said dog in its movements, one of said plates beingslotted and capable of oscillatory motion, said dog having a lugprojecting through said slot, for releasing said dog, said slot beingL-shaped for the purpose of locking said dog in engagement with saidhead.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EGBERT H. DERBY.

Witnesses:

FRANK G. WAsGATT, ANDREW J. WASGATT.

